Do your air ducts rattle and make odd noises, or are they are simply not performing as they once did? You may be due for an air duct inspection.
A professional air duct inspection can determine the cause of these and other air flow problems. In many cases, air ducts can become cracked, separated, or even completely disconnected over time. If this happens, energy you are spending to cool and heat the air is literally being blown away into your attic, basement or crawlspace.